A block of mass `m = 1 kg` is released from point `A` along a smooth track as shown. Part `AB` is circular with radius `r_(1) = 4 m` and circular at `C` with radius `r_(2)`. Height of point `A` is `h_(1) = 2m` and of `c` is `h_(2) = 1m (g = 10 m//s^(2))`. . The force exerted by block on the track at `B` isA. 10 NB. 20 NC. 30 ND. 40 N

A block of mass `m = 1 kg` is released from point `A` along a smooth t

1.	A block of mass `m = 1 kg` is released from point `A` along a smooth track as shown. Part `AB` is circular with radius `r_(1) = 4 m` and circular at `C` with radius `r_(2)`. Height of point `A` is `h_(1) = 2m` and of `c` is `h_(2) = 1m (g = 10 m//s^(2))`. . The force exerted by block on the track at `B` isA. 10 NB. 20 NC. 30 ND. 40 N
Answer» Correct Answer - B `v_(2) = sqrt(2gh_(1)) , N = mg + (mv_(2)^(2))/(r_(1))`.

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